1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a297380826f9e22d2f7655cca6656f7118c58fbfc51563aefaf67447530dd9b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0543a1c4-c236-4016-85eb-119803a93a43.json and https://artists.proofprofile.net/proofs/artist/0543a1c4-c236-4016-85eb-119803a93a43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3891d393b94504d3284cbfdcd5bf508ff669535b2134471274c0d01d8cf71609. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2035886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae9e9b55334a056affaeb937245b79099b401c4e9d87360d0176b7893dd6e3f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2260895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252f8fd4c9bed5f63008043eda720bbb9e2c68984a8b776ed3d4d726137640cd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2260897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0c1f3d7cd2a0e21ad928f0d6c9822075074d6b58ee3708fae173ab7204b46f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2084608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f49c564c96b39b8caaa14c95ed6785e72b9d28e454a1013566767a0899db1d1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2084610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a10aeb3157d1cfa387cc0db6c7c212b76ab4103ec8ca286e8dce089d031b9ca. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2260910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cb1b5cf752edd1a2911c3a6d9e711fa814ae3c7d672cbd8b8e35236b9ef119. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2260912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb471087fa7ff8ca2d71a404973f7e45489c5076990c652e1915e1245732e1170. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2260914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b4b763b0d82dfa41e61331bc8277f3c45991c2a2ecb7c70bf162b7b9e2a7d2. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2260930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe350525b73c7b3cc4a1775b8dfc1e7af42adf65c85be88dd1826f59e84f1a433. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2084607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef12b7403bc2e4d3cdd128832d51c50d7e02b810d74395431ddb5a0c0da8e5c. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2035858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a0042f9b41c816e6057146c1b33f376c7623874d06c52a23ef1c2e80674c45. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2265823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883121fac7ac13da6d5261c657a7b7c892174514861429f79880275a06c61c08. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2265828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d055d0c8dbe49723b8307973bce1bd7cddd96cdb05cadf8a52947aab55e5f5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2265830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7464a8b048d22bcf896bc0f42f4b8e58fea3f1647ca20ccd9e799e60dae12b88. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:21:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2265726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5861abce484897fdcdb6205268dc24732b687618becbd1a87bb3fae04317d91. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2265731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527cc0477e870414ebdfe4161398046c123dc6da224c867a0fcf58c8f9709953. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2265732.
Al Señor de los Milagros (Marcha Oficial)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072764ef69617a0b5a121e1c93191876a3dac5818d84efd47e47294398a5e0a0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2265733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81a50b268fe4328ebe18297687b59ec89670966a293e14236cd83fe745a7046. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2269580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e76112b6812ac890612ae8f049936eff5c565e8553cd1ae7e0e5816a6fd9d76. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2269581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd434b634d4af5e1d194f30fcead07131685266a4596cef1c9e9e1c90811cea4d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2269582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91eaae4266a1989d6adbbd4759bc14c0eef68ebc70aebf9f59070929b0c9d365. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2269585.